915804864 has 336 divisors, whose sum is σ = 3067690080. Its totient is φ = 258785280.

The previous prime is 915804863. The next prime is 915804881. The reversal of 915804864 is 468408519.

915804864 is a `hidden beast` number, since 9 + 1 + 580 + 4 + 8 + 64 = 666.

It is not an unprimeable number, because it can be changed into a prime (915804863) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5833074 + ... + 5833230.

It is an arithmetic number, because the mean of its divisors is an integer number (9130030).

Almost surely, 2^915804864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 915804864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1533845040).

915804864 is an abundant number, since it is smaller than the sum of its proper divisors (2151885216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

915804864 is a wasteful number, since it uses less digits than its factorization.

915804864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 915804864 is about 30262.2679916757. The cubic root of 915804864 is about 971.1082610454.

The spelling of 915804864 in words is "nine hundred fifteen million, eight hundred four thousand, eight hundred sixty-four".